CN109209268A - The method that drain is returned in acidification is handled using reproducibility iron powder - Google Patents
The method that drain is returned in acidification is handled using reproducibility iron powder Download PDFInfo
- Publication number
- CN109209268A CN109209268A CN201811222924.0A CN201811222924A CN109209268A CN 109209268 A CN109209268 A CN 109209268A CN 201811222924 A CN201811222924 A CN 201811222924A CN 109209268 A CN109209268 A CN 109209268A
- Authority
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- China
- Prior art keywords
- acidification
- drain
- iron powder
- returned
- reproducibility iron
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- 230000020477 pH reduction Effects 0.000 title claims abstract description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000010802 sludge Substances 0.000 claims abstract description 3
- 239000002910 solid waste Substances 0.000 claims abstract description 3
- 239000006228 supernatant Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000010237 hybrid technique Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/068—Arrangements for treating drilling fluids outside the borehole using chemical treatment
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The method that drain is returned in acidification is handled using reproducibility iron powder the invention discloses a kind of, the specific steps are that: it is returned to every liter of acidification and 0.05~0.25g grade, micron order or nanoscale reproducibility iron powder is added in drain, and it is uniformly mixed and sufficiently react 4~16h so that reproducibility iron powder and acidification is returned drain；Then the reaction solution obtained after abundant reaction is stood, makes 2~5h of its natural subsidence；Supernatant liquid is extracted, and using lower layer's sludge as disposition of solid waste；This is simple using the method and process that drain is returned in the processing acidification of reproducibility iron powder, pharmaceutical quantities consume small, high treating effect, significantly promote the degradation that pollutant in drain is returned in acidification, it is strong using high surface activity, the reducing power of Zero-valent Iron, being to return with acidification simultaneously makes the various organic pollutants in waste liquid obtain effective degradation during drain is reacted, its bring environmental pollution is alleviated, the sustainable development for exploitation of oil-gas field industry provides powerful guarantee.
Description
Technical field
It is the present invention relates to oil gas field environmental protection technical field, in particular to a kind of to be returned using the processing acidification of reproducibility iron powder
The method of drain.
Background technique
In domestic and international oilfield exploitation procedure, acidification is the major measure of oil well production increasing and intensified injection of wells, and drain is returned in acidification
Caused problem of environmental pollution is increasingly taken seriously.Acidification returns drain and does not contain only substantial oil, suspended impurity and residual acid (with salt
Based on acid), also containing substances such as a large amount of inorganic ions for blocking up object from pit gear and stratum dirt, there is strong impulse gas
Taste, if do not realized, efficient process environmental hazard is very big.
Currently, drain process flow is returned in acidification is usually taken flocculating setting, neutralization, Fe/C light electrolysis, oxidation, active carbon suction
It is the methods of attached to reach country's discharge or reinjection standard.To improve acidification effect, acidification dosing is reduced, operation is reduced
At the synthesis acidification technology for preferably using a variety of acidification techniques to combine.It is simple to neutralize a coagulation process process, it is contemplated that oil gas
The operating location dispersion in field the problems in does not collect, and such as using moveable intermittent processing unit, then greatly reduces investment, simultaneously
Facilitate a variety of management, producing cost is low, easily promotes the use of in each major oil and gas field.Oxidation-absorption method is not only easy to operate, and saving takes
With and treatment effect can be improved, reach state sewage emission standard；But due to using this harmful influence of hydrogen peroxide, major
The application in oil field receives a degree of limitation.And handled using neutralization-coagulation-oxidation-absorption hybrid technique, it handles
Color, taste, pH value and the suspended matter etc. of sewage sample afterwards meet National Industrial sewage drainage standard, but the technique is to containing highly concentrated
Spend and be not easy oxidation of organic compounds oil gas field acidification return drain improvement it is particularly suitable, in addition at the scene in use using movable type
Drain processing is returned in the acidification that processing equipment can be used for dispersing well site；But the technique is to oil, the microorganism etc. in fracturing outlet liquid
The removal effect of pollutant is relatively limited.Using neutralization-Fe/C light electrolysis-catalysis oxidation-active carbon adsorption, that treated is dirty
Although water sample pH value etc. reaches discharge standard, since HCl content is higher in acidizing waste fluid, so that removal Cl-Difficulty it is larger,
Thus need further to study minimizing technology.
In conclusion although above-mentioned various acidification backflow waste liquid processing techniques respectively have feature, in current reality operation
In be unfavorable for actual engineer application the problem of such as generally existing technique is cumbersome, pharmaceutical quantities consumption is big.Therefore, waste discharge is returned in acidification
In liquid treatment process be badly in need of develop it is a kind of have both simple process, pharmaceutical quantities consume small and high treating effect processing technique or work
Skill.
Summary of the invention
The object of the present invention is to provide a kind of realize to return the utilization reproducibility iron that drain is efficiently treated through to petroleum acidification
The method that drain is returned in powder processing acidification.
For this purpose, technical solution of the present invention is as follows:
A method of acidification is handled using reproducibility iron powder and returns drain, steps are as follows: being returned in drain and is added to every liter of acidification
Enter 0.05~0.25g grade, micron order or nanoscale reproducibility iron powder, and under 40~100 revs/min of mixing speed
Make reproducibility iron powder and acidification return drain to be uniformly mixed and sufficiently react 4~16h；Then the reaction solution that will be obtained after abundant reaction
It stands, it is made to give birth to 2~5h of natural subsidence.
After natural subsidence, the more limpid liquid in gained upper layer is to be acidified the treatment fluid for returning drain, passes through pipeline
Extraction, and lower layer's sludge is then used as disposition of solid waste.
It is preferred that the iron powder is that partial size is 100~500nm in step S1.
It is preferred that it is 0.15~0.20g/L that reproducibility iron powder, which returns the additional amount in drain in acidification, in step S1.
It is preferred that mixing speed is 60~80 revs/min in step S1.
It is preferred that reproducibility iron powder and acidification return the reaction time of drain as 8~12h in step S1.
It is preferred that static balance time is 3~4h in step S2.
Compared with prior art, the method and process for returning drain using the processing acidification of reproducibility iron powder is simple, and pharmaceutical quantities disappear
Consume small, high treating effect, significantly promote acidification and return the degradation of pollutant in drain, using the high surface activity of Zero-valent Iron,
Reducing power is strong, while being to return with acidification and have the various organic pollutants in waste liquid
Effect degradation, alleviates its bring environmental pollution, the sustainable development for exploitation of oil-gas field industry provides powerful guarantee.
Specific embodiment
The present invention is described further combined with specific embodiments below, but following embodiments absolutely not to the present invention have appoint
What is limited.
Embodiment 1
A method of acidification is handled using reproducibility iron powder and returns drain, steps are as follows: acidification being added in reactor tank and returns
Drain and 0.15g/L, the nanoscale reproducibility iron powder that partial size is 100~500nm are stirred after being uniformly mixed at 80 revs/min
The reaction that 12h is carried out under speed, natural subsidence 4h are mixed, the more limpid liquid in gained upper layer is to be acidified the processing for returning drain
Liquid.
Embodiment 2
A method of acidification is handled using reproducibility iron powder and returns drain, steps are as follows: acidification being added in reactor tank and returns
Drain and 0.20g/L, the micron order reproducibility iron powder that partial size is 0.5~100 μm are stirred after being uniformly mixed at 60 revs/min
The reaction that 12h is carried out under speed, natural subsidence 4h are mixed, the more limpid liquid in gained upper layer is to be acidified the processing for returning drain
Liquid.
Embodiment 3
A method of acidification is handled using reproducibility iron powder and returns drain, steps are as follows: acidification being added in reactor tank and returns
Drain and 0.25g/L, the grade reproducibility iron powder that partial size is 0.1~1mm, in 90 revs/min of stirring after being uniformly mixed
The reaction of 16h, natural subsidence 3h are carried out under speed, the more limpid liquid in gained upper layer is to be acidified the treatment fluid for returning drain.
Acidification in Examples 1 to 3 returns drain and returns drain using identical acidification.According to professional standard, row is returned to acidification
COD, oil content and solid content in liquid and the supernatant liquor handled by Examples 1 to 3 are measured and calculate, and obtain
The removal rate to COD, oil content and solid content in acidification anti-drain realized using above-mentioned reproducibility iron powder facture.
Specific calculated result see the table below 1.
Table 1:
As it can be seen from table 1 acidification of the same race returns drain after Examples 1 to 3 is handled, during the pH that drain is returned in acidification tends to
Property, COD removal rate therein reach 78% or more, and oil content removal rate reaches 80% or more, and solid content removal rate reaches 76%,
Make to be acidified using the method disclosed in the present application for returning drain using the processing acidification of reproducibility iron powder and returns the COD content of drain, contains
Oil mass, solid content are significantly cut down；As it can be seen that the processing method has obtained the various organic pollutants in waste liquid effectively
Degradation, alleviates its bring environmental pollution, the sustainable development for exploitation of oil-gas field industry provides powerful guarantee.
Claims (6)
1. a kind of handle the method that drain is returned in acidification using reproducibility iron powder, which is characterized in that steps are as follows: returning to every liter of acidification
It is added 0.05~0.25g grade, micron order or nanoscale reproducibility iron powder in drain, and is stirred at 40~100 revs/min
Mixing makes reproducibility iron powder and acidification return drain under speed is uniformly mixed and sufficiently reacts 4~16h；Then it will be obtained after abundant reaction
Reaction solution stand, make 2~5h of its natural subsidence；Supernatant liquid is extracted, and using lower layer's sludge as disposition of solid waste.
2. according to claim 1 handle the method that drain is returned in acidification using reproducibility iron powder, which is characterized in that in step S1,
The iron powder is that partial size is 100~500nm.
3. according to claim 1 handle the method that drain is returned in acidification using reproducibility iron powder, which is characterized in that in step S1,
It is 0.15~0.20g/L that reproducibility iron powder, which returns the additional amount in drain in acidification,.
4. according to claim 1 handle the method that drain is returned in acidification using reproducibility iron powder, which is characterized in that in step S1,
Mixing speed is 60~80 revs/min.
5. according to claim 1 handle the method that drain is returned in acidification using reproducibility iron powder, which is characterized in that in step S1,
The reaction time that drain is returned in reproducibility iron powder and acidification is 8~12h.
6. according to claim 1 handle the method that drain is returned in acidification using reproducibility iron powder, which is characterized in that in step S2,
Static balance time is 3~4h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222924.0A CN109209268A (en) | 2018-10-19 | 2018-10-19 | The method that drain is returned in acidification is handled using reproducibility iron powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222924.0A CN109209268A (en) | 2018-10-19 | 2018-10-19 | The method that drain is returned in acidification is handled using reproducibility iron powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109209268A true CN109209268A (en) | 2019-01-15 |
Family
ID=64979682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811222924.0A Pending CN109209268A (en) | 2018-10-19 | 2018-10-19 | The method that drain is returned in acidification is handled using reproducibility iron powder |
Country Status (1)
| Country | Link |
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| CN (1) | CN109209268A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879472A (en) * | 2019-02-13 | 2019-06-14 | 中国石油集团渤海钻探工程有限公司 | Drain processing method is returned in acidification |
| CN112551807A (en) * | 2020-11-18 | 2021-03-26 | 中联煤层气有限责任公司 | Treatment method and treatment system for three-gas combined production flowback fluid |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030010712A1 (en) * | 2001-04-18 | 2003-01-16 | Minghua Gao | Process for biochemical treatment of waste water using nano materials |
| CN101234812A (en) * | 2008-02-05 | 2008-08-06 | 中国科学院沈阳应用生态研究所 | Method for decoloring burned waste water by using zero-valent iron/ultrasonic wave synergistic reaction |
| CN101250004A (en) * | 2008-02-05 | 2008-08-27 | 中国科学院沈阳应用生态研究所 | Device and method for improving function of CH4 production by UASB and removal rate of phosphate by using zero-valent iron |
| CN102249392A (en) * | 2011-05-12 | 2011-11-23 | T&H美国集团有限公司 | Nano-multi-metal redactor filling |
| CN102276045A (en) * | 2010-06-11 | 2011-12-14 | 南京宏德纳米材料有限公司 | Method for treating typical heavy metals and organochlorine waste water by using nano zerovalent iron as initiator |
| CN103288251A (en) * | 2013-06-14 | 2013-09-11 | 西安建筑科技大学 | Iron-carbon micro-electrolysis processing method and device for oil field well site acid waste water |
| CN203781969U (en) * | 2014-04-22 | 2014-08-20 | 中国石油天然气股份有限公司 | Environment-friendly pre-treatment device of fracturing flowback liquid |
| CN204265597U (en) * | 2014-12-09 | 2015-04-15 | 赵刚 | Oil field compression fracture returns discharge opeing treatment unit |
| CN204385016U (en) * | 2015-01-20 | 2015-06-10 | 邓进军 | Fracturing outlet liquid treatment unit |
| CN105693056A (en) * | 2016-03-15 | 2016-06-22 | 同济大学 | Method for methanogenesis through anaerobic sludge digestion fortified by zero-valent nano-iron |
| CN106315960A (en) * | 2016-10-10 | 2017-01-11 | 四川奎能环保科技有限公司 | Treatment method for wastewater of oil and gas field |
| CN106365345A (en) * | 2016-08-30 | 2017-02-01 | 河南油田工程咨询有限公司 | Treatment method of oil and gas field fracturing flow-back liquid |
| CN107032473A (en) * | 2017-06-01 | 2017-08-11 | 同济大学 | It is a kind of to fluidize the system that state subregion iron powder handles waste water |
| CN107176743A (en) * | 2017-05-05 | 2017-09-19 | 四川沃兹凯兰科技有限公司 | A kind of processing method of organic wastewater |
-
2018
- 2018-10-19 CN CN201811222924.0A patent/CN109209268A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030010712A1 (en) * | 2001-04-18 | 2003-01-16 | Minghua Gao | Process for biochemical treatment of waste water using nano materials |
| CN101234812A (en) * | 2008-02-05 | 2008-08-06 | 中国科学院沈阳应用生态研究所 | Method for decoloring burned waste water by using zero-valent iron/ultrasonic wave synergistic reaction |
| CN101250004A (en) * | 2008-02-05 | 2008-08-27 | 中国科学院沈阳应用生态研究所 | Device and method for improving function of CH4 production by UASB and removal rate of phosphate by using zero-valent iron |
| CN102276045A (en) * | 2010-06-11 | 2011-12-14 | 南京宏德纳米材料有限公司 | Method for treating typical heavy metals and organochlorine waste water by using nano zerovalent iron as initiator |
| CN102249392A (en) * | 2011-05-12 | 2011-11-23 | T&H美国集团有限公司 | Nano-multi-metal redactor filling |
| CN103288251A (en) * | 2013-06-14 | 2013-09-11 | 西安建筑科技大学 | Iron-carbon micro-electrolysis processing method and device for oil field well site acid waste water |
| CN203781969U (en) * | 2014-04-22 | 2014-08-20 | 中国石油天然气股份有限公司 | Environment-friendly pre-treatment device of fracturing flowback liquid |
| CN204265597U (en) * | 2014-12-09 | 2015-04-15 | 赵刚 | Oil field compression fracture returns discharge opeing treatment unit |
| CN204385016U (en) * | 2015-01-20 | 2015-06-10 | 邓进军 | Fracturing outlet liquid treatment unit |
| CN105693056A (en) * | 2016-03-15 | 2016-06-22 | 同济大学 | Method for methanogenesis through anaerobic sludge digestion fortified by zero-valent nano-iron |
| CN106365345A (en) * | 2016-08-30 | 2017-02-01 | 河南油田工程咨询有限公司 | Treatment method of oil and gas field fracturing flow-back liquid |
| CN106315960A (en) * | 2016-10-10 | 2017-01-11 | 四川奎能环保科技有限公司 | Treatment method for wastewater of oil and gas field |
| CN107176743A (en) * | 2017-05-05 | 2017-09-19 | 四川沃兹凯兰科技有限公司 | A kind of processing method of organic wastewater |
| CN107032473A (en) * | 2017-06-01 | 2017-08-11 | 同济大学 | It is a kind of to fluidize the system that state subregion iron powder handles waste water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879472A (en) * | 2019-02-13 | 2019-06-14 | 中国石油集团渤海钻探工程有限公司 | Drain processing method is returned in acidification |
| CN112551807A (en) * | 2020-11-18 | 2021-03-26 | 中联煤层气有限责任公司 | Treatment method and treatment system for three-gas combined production flowback fluid |
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Application publication date: 20190115 |
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